selinux-policy/refpolicy/policy/modules/system/userdomain.te

policy_module(userdomain,1.0.1)

########################################
#
# Declarations
#

# admin users terminals (tty and pty)
attribute admin_terminal;

# users home directory
attribute home_dir_type;

# users home directory contents
attribute home_type;

# The privhome attribute identifies every domain that can create files under
# regular user home directories in the regular context (IE act on behalf of
# a user in writing regular files)
attribute privhome;

# all unprivileged users home directories
attribute user_home_dir_type;
attribute user_home_type;

# all unprivileged users ptys
attribute user_ptynode;

# all unprivileged users tmp files
attribute user_tmpfile;

# all unprivileged users ttys
attribute user_ttynode;

# all user domains
attribute userdomain;

# unprivileged user domains
attribute unpriv_userdomain;

########################################
#
# Local policy
#

define(`role_change',`
	allow $1_r $2_r;
	type_change $2_t $1_devpts_t:chr_file $2_devpts_t;
	type_change $2_t $1_tty_device_t:chr_file $2_tty_device_t;
	# avoid annoying messages on terminal hangup
	dontaudit $1_t { $2_devpts_t $2_tty_device_t }:chr_file ioctl;
')

ifdef(`targeted_policy',`
	# Define some type aliases to help with compatibility with
	# macros and domains from the "strict" policy.
	unconfined_alias_domain(secadm_t)
	unconfined_alias_domain(sysadm_t)

	# User home directory type.
	type user_home_t alias { staff_home_t sysadm_home_t }, home_type;
	files_type(user_home_t)
	files_associate_tmp(user_home_t)
	fs_associate_tmpfs(user_home_t)

	type user_home_dir_t alias { staff_home_dir_t sysadm_home_dir_t }, home_dir_type, home_type;
	files_type(user_home_dir_t)
	files_associate_tmp(user_home_dir_t)
	fs_associate_tmpfs(user_home_dir_t)

	# compatibility for switching from strict
#	dominance { role secadm_r { role system_r; }}
#	dominance { role sysadm_r { role system_r; }}
#	dominance { role user_r { role system_r; }}
#	dominance { role staff_r { role system_r; }}

	# dont need to use the full role_change()
	allow sysadm_r system_r;
	allow sysadm_r user_r;
	allow user_r system_r;
	allow user_r sysadm_r;
	allow system_r sysadm_r;
	allow system_r sysadm_r;

	allow privhome user_home_t:dir manage_dir_perms;
	allow privhome user_home_t:file create_file_perms;
	allow privhome user_home_t:lnk_file create_lnk_perms;
	allow privhome user_home_t:fifo_file create_file_perms;
	allow privhome user_home_t:sock_file create_file_perms;
	allow privhome user_home_dir_t:dir rw_dir_perms;
	type_transition privhome user_home_dir_t:{ dir file lnk_file fifo_file sock_file } user_home_t;
	files_search_home(privhome)

	optional_policy(`samba',`
		samba_per_userdomain_template(user)
	')
',`
	admin_user_template(sysadm)
	unpriv_user_template(staff)
	unpriv_user_template(user)

	# user role change rules:
	# sysadm_r can change to user roles
	role_change(sysadm, user)
	role_change(sysadm, staff)

	# only staff_r can change to sysadm_r
	role_change(staff, sysadm)

	# this should be tunable_policy, but
	# currently type_change and RBAC allow
	# do not work in conditionals
	ifdef(`user_canbe_sysadm',`
		role_change(user,sysadm)
	')

	allow privhome home_root_t:dir { getattr search };

	########################################
	#
	# Sysadm local policy
	#

	# for su
	allow sysadm_t userdomain:fd use;

	# Add/remove user home directories
	allow sysadm_t user_home_dir_t:dir create_dir_perms;
	files_create_home_dirs(sysadm_t,user_home_dir_t)

	ifdef(`direct_sysadm_daemon',`
		optional_policy(`init',`
			init_run_daemon(sysadm_t,sysadm_r,admin_terminal)
		')
	')

	tunable_policy(`allow_ptrace',`
		domain_ptrace_all_domains(sysadm_t)
	')

	optional_policy(`amanda',`
		amanda_run_recover(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`apache',`
		apache_run_helper(sysadm_t,sysadm_r,admin_terminal)
		#apache_run_all_scripts(sysadm_t,sysadm_r)
		#apache_domtrans_sys_script(sysadm_t)
	')

	optional_policy(`apm',`
		# cjp: why is this not apm_run_client
		apm_domtrans_client(sysadm_t)
	')

	optional_policy(`bootloader',`
		bootloader_run(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`bind',`
		bind_run_ndc(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`bluetooth',`
		bluetooth_run_helper(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`clock',`
		clock_run(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`dmidecode',`
		dmidecode_run(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`firstboot',`
		firstboot_run(sysadm_t,sysadm_r,sysadm_tty_device_t)
	')

	optional_policy(`fstools',`
		fstools_run(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`hostname',`
		hostname_run(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`ipsec',`
		# allow system administrator to use the ipsec script to look
		# at things (e.g., ipsec auto --status)
		# probably should create an ipsec_admin role for this kind of thing
		ipsec_exec_mgmt(sysadm_t)
		ipsec_stream_connect(sysadm_t)
		# for lsof
		ipsec_getattr_key_socket(sysadm_t)
	')

	optional_policy(`iptables',`
		iptables_run(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`libraries',`
		libs_run_ldconfig(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`lvm',`
		lvm_run(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`logrotate',`
		logrotate_run(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`lpd',`
		lpd_run_checkpc(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`kudzu',`
		kudzu_run(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`modutils',`
		modutils_run_depmod(sysadm_t,sysadm_r,admin_terminal)
		modutils_run_insmod(sysadm_t,sysadm_r,admin_terminal)
		modutils_run_update_mods(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`mount',`
		mount_run(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`mysql',`
		mysql_stream_connect(sysadm_t)
	')

	optional_policy(`netutils',`
		netutils_run(sysadm_t,sysadm_r,admin_terminal)
		netutils_run_ping(sysadm_t,sysadm_r,admin_terminal)
		netutils_run_traceroute(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`rpc',`
		rpc_domtrans_nfsd(sysadm_t)
	')

	optional_policy(`ntp',`
		ntp_stub()
		corenet_udp_bind_ntp_port(sysadm_t)
	')

	optional_policy(`pcmcia',`
		pcmcia_run_cardctl(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`portmap',`
		portmap_run_helper(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`quota',`
		quota_run(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`radius',`
		radius_use(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`rpm',`
		rpm_run(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`samba',`
		samba_run_net(sysadm_t,sysadm_r,admin_terminal)
		samba_run_winbind_helper(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`selinuxutil',`
		seutil_run_checkpol(sysadm_t,sysadm_r,admin_terminal)
		seutil_run_loadpol(sysadm_t,sysadm_r,admin_terminal)
		seutil_run_restorecon(sysadm_t,sysadm_r,admin_terminal)
		seutil_run_setfiles(sysadm_t,sysadm_r,admin_terminal)

		ifdef(`targeted_policy',`',`
			seutil_run_runinit(sysadm_t,sysadm_r,admin_terminal)
		')
	')

	optional_policy(`sysnetwork',`
		sysnet_run_ifconfig(sysadm_t,sysadm_r,admin_terminal)
		sysnet_run_dhcpc(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`unconfined',`
		unconfined_domtrans(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`usermanage',`
		usermanage_run_groupadd(sysadm_t,sysadm_r,admin_terminal)
		usermanage_run_useradd(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`vpn',`
		vpn_run(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`webalizer',`
		webalizer_run(sysadm_t,sysadm_r,admin_terminal)
	')
')